How can you sleep well ?

1. How can you sleep well?

2. Headquarter SCHOTT Solar AG Hattenbergstr. 10 D- 55122 Mainz High Output Stability of Solar Modules 13th March 2012 Amit Barve – General Manager Solar (India and SEA)

3. Disclaimer This presentation is furnished to you solely for your information, should not be treated as giving investment advice and may not be reproduced or redistributed, in whole or in part, to any other person. This presentation constitutes neither an offer to sell nor an invitation to buy securities. No representation or warranty (express or implied) is made as to, and no reliance should be placed on, the fairness, accuracy or completeness of the information contained herein and, accordingly, none of SCHOTT Solar AG (herein after referred to as the 'Company'), any of their parent or subsidiary undertakings or any of such person’s officers, directors, employees or advisors accepts any liability whatsoever arising directly or indirectly from the use of this document. This presentation contains certain forward-looking statements, including assumptions, opinions and views of the Company or cited from third party sources. Such statements only reflect the current views of the Company with respect to future events and they are subject to various known and unknown risks, uncertainties and other factors, which could cause the actual results, financial position, development or performance of the Company to differ materially from the estimations expressed or implied herein. The Company does not guarantee that the assumptions underlying such forward-looking statements are free from errors nor does it accept any responsibility for the future accuracy of the opinions expressed in this presentation or the actual occurrence of the forecasted developments. The Company does not accept any obligation to update or revise any forward-looking statements set forth herein or to adjust them to future events or developments. In particular, you should not place undue reliance on forward-looking statements, which speak only as of the date of this presentation. Where any information and statistics are quoted from any external source, such information or statistics should not be interpreted as having been adopted or endorsed by the Company as being accurate. By accepting this presentation you acknowledge that you will be solely responsible for your own assessment of the market and the market position of the Company and that you will conduct your own analysis and be solely responsible for forming your own view of the potential future performance of the Company’s business. There shall be no sale of shares of the Company in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to qualification under securities laws of such state or jurisdiction. This presentation does not constitute or form a part of, and should not be construed as, an offer or invitation to subscribe for or purchase any securities and neither these materials nor anything contained herein shall form the basis of, or be relied on in connection with, any offer or commitment whatsoever. This presentation speaks of September, 2011. Neither the delivery of this presentation nor any further discussions of the Company with any of the recipients shall, under any circumstances, create any implication that there has been no change in the affairs of the Company since such date. This material is given in conjunction with an oral presentation and should not be taken out of context.

4. 1 COMPANYINTRODUCTION 1 Company Introduction 2 Essentials for High Stable output 3 Summary

5. SCHOTT AG Since 1884

6. SCHOTT Solar AG Since 1958 Crystalline Since 1980 Thin-film Since 1983 CSP Receiver

7. SCHOTT Solar is globally positioned both in Production & Sales 7 7 Alzenau (DE) Jena (DE) Mitterteich (DE) MAINZ (DE) Headquarters MAINZ (DE) Albuquerque, NM (USA) Val. Mezirici (CZ) Taicang (CN) Sevilla (ES) CSP Production Site PV Production Site CSP & PV Prod. Site Sales Office

8. Essentials for • High Stable • output 1 Company Introduction 2 Essentials for High Stable Output 3 Summary

9. Essentials for High Stable Output 9 9 Proven performance stability Worldwide installed test installations 10 climatic chambers 2 x IEC (TCT / DHT) +additional Combi-test Strict test criteria High internal quality standards

10. Yield (W) Initial power 1984 40 Module measurement 2003 30 20 10 0 Module C Module A Module B > 90 % performance stability High durability and low power degradation proven in tests conducted by The Frauenhofer Institute for Solar Energy Systems • In a long-term study conducted by the renowned Fraunhofer Institute over a period of 24 years, tested samples of SCHOTT Solar modules distinguished themselves with an extremely low degradation of an average of 5,5 %. • Module type: PQ 10/40/01 • Yield: 2.3 kWp • Installation: 1984 • The original report can be downloaded at http://www.schottsolar.com/global/solar-yield/long-term-study/

11. Testing Standards : 2 X IEC Standards SCHOTT Solar tests its modules with climate tests that are twice as strict as required by the IEC standard. From our over 50 years experience we‘ve learnt that standards are not sufficient to keep all customer promises. TCT1)200 cycles 400 cycles DHT2)1000 h 2000 hours COMBI3)- 20 weeks Certified testing laboratory @ SCHOTT Solar AG in Germany 1) TCT Temperature cycling test -40°C - 85°C2) DHT Damp heat test +85°C / 85% relative humidity3) COMBI 20 weeks (DHT 4 days / TCT 3 days )

12. SCHOTT Solar AG | PV Module Quality Unternehmensmemorandum 12 Our damp-heat-test benchmarking regularly reveals substantial differences in performance quality. • 85 °C; 85 % relative humidity • 2000 h (double IEC 61215 Standard) • Duration: ~ 15 weeks • Quality standard: Powerloss < 5 % Pmpp IEC standard Δ in % Pmpp

13. SCHOTT Solar AG | PV Module Quality Unternehmensmemorandum 13 Thermal Cycle Tests show a similar picture… • Temperature variation: -40 °C and 85 °C • 400 cycles (double IEC 61215 Standard) • Duration: ~ 24 weeks • Qualitäty standard: Powerloss < 5 % Pmpp Δ in % Pmpp Time / Cycle

14. SCHOTT Solar AG | PV Module Quality Unternehmensmemorandum 14 And combined cycle tests really seperate the wheat from the chaff… • Not part of IEC Standards • DH 85 °C; 85% relative air humidity, 4 days • TCT -40 °C to 90 °C, 3 days • Duration: ~ 20 weeks • Internal Quality standard: Powerloss < 5 % Pmpp Δ in % Pmpp

15. Schott Solar Gaggenau Stuttgart Schott Solar Bayreuth Schott Solar Penang Nicosia Schott Solar Alzenau Schott Solar Albuquerque Schott Solar Munich Continuous benchmarking in test installations…

16. Test Case The backing sheet is like the skin of the module, protecting it against damage and insulating it to the outside. 1 Aluminium frame 2 Sealing 3 Glass 4 EVA 5 Solar cell6 backsheet • If back sheet is damaged, dampness can seep into the module and trigger gradual corrosion • In the worst case, the sheet provides no insultation and can trigger electric shock from the frame or the mounting system

17. Most foils look alike : Yet their performance varies greatly. • Each manufacturer uses a different combination of components • Synthethic components have different reactions to specific compositions • Even if manufacturers only use certified components, it still does not guarentee that the module itself will work properly Each manufacturer needs to perform his own internal tests Delamination Shrinkage of back skin Tears / Cracks

18. The selection of our new backsheet foil included the test of 52 different materials. • 52 samples from 21 different suppliers were tested for a new backsheet foil • Only suppliers from North America, Europe, Japan were considered, as it takes about three to five years until foil suppliers know what they are doing • Initial double-standard SCHOTT Solar test: • Test samples: 1 reference sample + 5 test samples (30 x 30 cm) • Probes taken inbetween, e.g. every 500 hours • Main double-standard SCHOTT Solar test • 23 remaining products • 230 Test samples: standard module size

19. Fewer than half of the foils passed the initial tests, and only 3 out of 52 foils passed our main test! 19 19

20. 3 SUMMARY 1 Company Introduction 2 Essentials for High Stable Output 3 Summary

21. Probe your Vendors .... 21 21 Strong Research and Development team Long and Strong Technical and financial fundamentals Adequate Testing setups High internal quality standards

22. Summary

23. Any Question? Thank you for your attention.. Please ask us!